Electrically operated register



July 16, 1935- L. J. J. SCHREIBER ELECTRICALLY OPERATED REGISTER Filed July 27, 1931 INVENTOR L. .1 J. SCHRE/BER ATTORNEY more positive, accurate,

counting mechanism.

Patented July 16, 1935 FATE NT OFFICE,

nLno'rRrcALLr' ornns'rnn REGISTER,

Louis Jean Joseph Schreiber, Paris, France; as- I signor to Western Electric Company, Incorporated, New York York, N. Y., a corporation of New Application July 27 1931, Serial No. 553,337

In'Great Britain October-27, 1 9 30 g 3 Claims.- This invention relates to electromagnetic counting mechanisms and more particularly to the steppingmechanisms therefor. I The object of this invention is;to provide a According to this invention actuating mechanism T1 of an electromagnetically operated register device comprises an armatureparatche 10 wheel, a' pawl for advancing saidwheel; sponseto the movement of said armature" and pawl for preventing the advance more than one step at a time, a' single spring for said armature and pawls 1 taining pawl for preventing the ment of said wheel.

In the preferred embodimen the trolling spring is anchored H member located immediatelyito or the counting wheels so that the'springzflgadjus'tment can be varied from the frontof the register. In

a number of other arrangements-the armature spring is located immediately above Annature in the space provided due to of the connecting lug pile-up or terminallblockr but in my preferred embodimentthis; space can be used for contact springs actuated the movement of the armature. 4 I One embodiment of the which: I

Fig. 1 shows a plan view of the magnetic core, armature, contact springs, stepping mechanism and terminal lugs of such a register;

Fig. 2 shows a side view of the structure servicemeter for telephone exchanges including the coil of the electromagnetthe counting wheels and the casing for enclosing the register;

Referring to Figs. 1 and 2, the core ll of the electromagnet is mounted on a frame member ll on which is also mounted the connecting lug pile-up or terminal block 20. Fixed between the member l4 and the pile-up is a thin plate spring I! which has extensions on either'side fastened efticientdurable table "mflviitianfm telephone or like systems will now r with reference to the accompanying (cuisi e; v I 1 v p to 'mt' e. [6. 'At the'end nearest the pile-up the armature is cutaway at its sides so that thes'pring extensions are free for some little asshownirr-Fig; l. The spring acts asa. pivotalf mounting for the armature and is so arrangedjthat th'e armature is normally slight ly spaced rom -thelower end of the member ll (seen 2); -At ;i tsffree endthe armature has .11v ent dm cooperate 'tlrthegpole piece of theffcore is; v on this end 1 v uiesmamresmeal-sn wmen arm}. I Th ireeend of amiis-for the greater por on or its' width curled over to form a bearing a-pivot pin llv which" at its extremities I .a pivot lot s; 4 which oaiitissrthe 5 widthi(see,;fig; 4).fthe member 2- carries an ex as a stop pawl. At the end re-1 jf inbte rrcm-theipawi s the member'l carries an: iadzfustable arm 6, betweenwhich-and a member Q the meter mounted a spring 15 2' NW1; 5 and l'forgn am escapement mechfor a square toothed ratchet wheel: 13 fixed to a counting wheel i2 forming part of the usual trainer counting wheels. Themember 9- fixed to the c'asing carries a spring ll forming a retaining pawl forthe toothed wheel ".1"

- }.-the;spring1 to the member -l "is'"oil'set somewhat from the 'pivotaxis of the pawl lso that-the spring tends to maintain ithepawljincontact 5 with the-wheel. Y At the same tim'e the spring I acts .a's a return spring; tor the armature. The controlling forceof the'spring onpawiii can be 'adju'sted'bir bending the member I; v. orawayfrom the piyotal axis 01 the controlling action ot'the spring mite-armsture by bendingjhemember 8 I .(see Fig.2) "tothe right or to the lefnthe memher 8 being fixed to the casing at; the meter. 40

The member 9 forms thebech stop fer the armature and is also adlustahlec -pfletween the insulating plates oithe terminalbiock 20 are mounted the connectirig'l lugs II for the magnet winding and for-the eontactsprings [9 which are adapted to. be operated by an insulating button :2 on the armature; It will 'be seen that these springs are positioned above the armature in the space necessitatedby height of the terminal j block Zjand do'not 941410 the size bf-the register, 1 I

When in normal position the 1 holds the pawls I and I in engagem'ehtwith .01 the ratchet wheel [3. fUpo magnet; not shown,' theerma ure ti- "against the tension chewing-Tao phwii atf{onei;end.; For the remainderof its? 'Itiwill be noted that the pointojticonnectioniot down portion I1 overlaps the lower end or the core l8. The pawl l is thus moved out of contact withthe ratchet wheel I3 and the pawl 5 is drawn toward the right, as shown in Fig. 2, to

engage the next tooth of the ratchet wheel.

an armature, a ratchet wheel, a non-magnetic arm, one end of said arm fixed to the free end of said armature, the other end of said aim being curled over for a portion of its width to form a bearing and further extended for the remainder of its width to engage said ratchet wheel as a stop pawl to limit the advance of said wheel to one step at a time, a pivot pin within said bearing, a driving pawl for advancing said wheel, said driving pawl being pivoted on said pin, the free xend of said driving pawl engaging said ratchet wheel, and a single spring for controlling said armature and pawls.

2. In an electromagnetic counting mechanism,

an armature, a ratchet wheel, a non-magnetic arm, one end of said arm fixed to the tree end of said armature, the other end of said arm being curled over for a portion of its width to form a bearing and further extended for the remainder of its width to engage said ratchet wheel as a stop pawl to limit the advance of said wheel to one step at a time, a pivot pin within said bearing, a driving pawl for advancing said wheel, said driving pawl being pivoted on said pin, the free end of said driving pawl engaging said ratchet wheel, and a single spring for controlling said armature and pawls, said spring being attached to said driving pawl, the point of attachment being oifset from the axis of rotation of said driving pawl so that said spring tends to maintain said pawl in contact with said wheel.

3. In an electromagnetic counting mechanism,

an armature, a ratchet wheel, a non-magnetic arm, one end of said arm fixed to the free end of said armature, the other end of said arm being curled over for a portion of its width to form a bearing and further extended for the remainder of its width to engage said ratchet wheel as a stop pawl, a pivot pin within said bearing, a driving pawl pivotedon said pin and engaging said wheel, and a single spring-for controlling said armature and pawls, said pawls and spring forming escapement mechanism to advance said ratchet wheel one step at atime. Y

' LOUIS JEAN JOSEPH SCHREIBER. 

